Guide to Graphics Card Fan Connectors and Adapter Cables
At CRJ Electronics, we feature the largest selection of computer fan adapter cables.
This guide is intended as a comprehensive resource, documenting the various graphics card fan headers encountered in our research and the adapter products engineered for these connectors.
While graphics card fans may use connectors smaller than the 4-pin PWM fan specification published by Intel, they adhere to the same electrical specifications, including voltage, tachometer and PWM signal, and wiring sequence. This compatibility has simplified our process of reverse engineering each connector to offer fan adapter cables that allow expanded connectivity.
Users can thus maintain superior fan speed monitoring and control through their graphics card software for aftermarket heatsink installations and small form factor deshroud modifications.
Graphics cards often use the same or similar connectors for LED lighting. Take note of this to avoid the possibility of damaging your hardware.
We highly encourage users to research their exact graphics card model and use resources such as the excellent teardown and PCB photos published by TechPowerUp.
PH Series 4-Pin Connector
The PH series connector, originally designed by JST (link to datasheet) is the most common connector used on modern graphics cards.
It's use extends beyond graphics cards as Gigabyte small form factor ITX motherboards now feature this fan connector as well.
Due to its widespread adoption, we have developed several cables for this connector.
HY Series 4-Pin Connector
The HY-4A connector was used by EVGA on their RTX 3000 series graphics cards, features a physical latch for secure retention and has an inverted pin sequence compared to the PH series.
HY Series 7-Pin Connector
Used by ASUS for several recent graphics card generations, this connector consolidates wiring for multiple fans into a single connector, supporting 2 output PWM signals and 3 tachometer input signals.
SH Series 14-Pin Connector
The SH connector, originally designed by JST (link to datasheet) is used on Nvidia's Founders Edition RTX 2000 series graphics cards.
The 14-pin connector is wired to support two tachometer and PWM fan signals.